Do you lack sense?

Passage: Proverbs 11:12-13  "Whoever belittles his neighbor lacks sense, but a man of understanding remains silent.  Whoever goes about slandering reveals secrets, but he who is trustworthy in spirit keeps a thing covered."

I caught myself putting someone down behind their back the other day.  It wasn't anything too awful, I didn't reveal anyone's darkest secret.  But I spoke poorly of them and it was entirely unnecessary.  I wasn't talking to that person's mentor or pastor in an effort to lovingly help them.  I was talking to a mutual friend and this acid came out of my mouth.